Compare 24/18 and 42/21, Which fraction is greater?

Compare 24/18 and 42/21

1^st number: 1 6/18, 2^nd number: 2 0/21

24/18 is smaller than 42/21

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
24/18 = 24 × 7/18 × 7 = 168/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
42/21 = 42 × 6/21 × 6 = 252/126
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
168/126 < 252/126 or 24/18 < 42/21

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